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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Unavailable
At a glance
- Condition
- New
- Model
- S6521B
- Weight
- 42.5 lb
- Vehicle Service Type
- Passenger Car
- Voltage
- 12 Volts
- Automotive Fit Type
- Vehicle Specific Fit
- Item Type Name
- Starter Battery
- In the box
- Starter Battery
Features 1
- Bosch Vehicle Battery P/N:S6521B
Specs 13
| Brand | Bosch |
|---|---|
| Vehicle Service Type | Passenger Car |
| Voltage | 12 Volts |
| Item Weight | 42.5 Pounds |
| Automotive Fit Type | Vehicle Specific Fit |
| Manufacturer | Bosch |
| Global Trade Identification Number | 50 |
| Compatible with Vehicle Type | Passenger Car |
| Brand Name | Bosch |
| Manufacturer Part Number | S6521B |
| UPC | 077212000050 |
| Item Type Name | Starter Battery |
| Manufacturer Warranty Description | Please contact us if you experience any issues within 30 days of receipt. |
No specs match.
Frequently asked questions
This product is currently out of stock. Please check back later for shipping info.
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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- Zip Pay in 4
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- Financing through Google Pay
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Top Amazon Reviews
Powerful
This is a seriously powerful battery, high quality, great value
Reviewed in the United States on December 27, 2025 by Steven Wingate
Good battery
So far this battery has worked surprisingly well… I have left it unused in the car for weeks and it still seems to be full strength
Reviewed in the United States on January 15, 2026 by Jimmy Mac
Very good battery
This battery is a good value and was very easy to install. The batter functions well and fit perfectly and has a good battery life.
Reviewed in the United States on October 2, 2025 by dawn miller
Battery lasted barely a year and ghosted
I purchased this Bosch battery for my Land Rover because the previous Bosch battery had lasted over 8 years . Well this new Bosch barely lasted 1 year and would not take a charge. The sellers are impossible to get ahold of so will try to go through Amazon. Poor service and product but in honesty have had very few Bosch products but this exception
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Reviewed in the United States on March 27, 2026 by Nordlander
Well Made
You can't beat these batteries. Another company make them but who cares. My last one lasted six years while the same model car had a different battery and last two. Pay the extra money and get some dependability.
Reviewed in the United States on December 31, 2024 by D. Davis
GREAT BATTERY
WENT THROUGH 3 BATTERIES THIS ONE WORKED WASTED $450.00 ON OTHERS!!!!
Reviewed in the United States on December 7, 2024 by HAMSTER
Typical Bosch excellence.
Engine turns over very quickly for fast starting.
Reviewed in the United States on March 14, 2024 by bobbobwhite